my 4x5 ( speed ) goes in the fiber box (graflex)
my series d slr goes in my tenba bag
rail camera or 5x7 go in a tenba car case.
i just lug stuff around to a place not far from my car ...
and don't do hiking or fun stuff like that ...
but if i did ...

http://www.photobackpacker.com/home.asp

it is run by an appugger ( and sponser!! ) and they make great backpacks!
i have bought things from bruce, the owner/appugger before
he is a great person, and his products are well worth looking into.